#1.3
answer = input("Enter your exam answers:")
right = "adbdcacbdac"
res = []
num = 0
for i in range(11):
    if answer[i] == right[i]:
        num += 1
        res.append(right[i])
    else:
        res.append('X')
print("You missed {} questions:{}".format(11-num,res))
print("Your score is:{}".format(int(100*(num)/11)))